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1. Executive summary -- 2. Acknowledgements -- 3. Introduction -- 4. Baseline study and regulatory background -- 5. Study descriptions -- 6. Monitoring sites and methods -- 7. Special study 1 : comparative study -- 8. Special study 2 : treatment system effectiveness -- 9. Mercury loads from points of discharge -- 10. Recommendations -- A. Maps -- B. Lateral extent of oxygenation -- C. Time series plots.